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How to reload .bash_profile from the command line

Gutha Vamsi Krishna

Overview

The .bash_profile is one of the startup files used by bash shell to set up the shell configuration.

In some systems, we may not find the file .bash_profile. In such cases, the shell looks for the file .profile.

We can also create the file .bash_profile and define functions or environment variables in it.

We can use the syntax below to reload the .bash_profile.

. ~/.bash_profile

Let's look at an example of this.

Example

#move to directory
cd ~/

#create bash profile
touch .bash_profile

#write into bash profile file
cat > .bash_profile <<- EOM
echo "Bash Profile execution starts.."
URL="https://www.educative.io/"
echo "Bash Profile execution stops.."
EOM

#reload the bash profile
. ~/.bash_profile

Explanation

In the code snippet above:

  • Line 5: We create a file .bash_profile since it is not available in this system.
  • Lines 8–12: We create an environment variable and a few echo statements in the .bash_profile file.
  • Line 15: We reload the .bash_profile file using the command . ~/.bash_profile.

After executing the terminal, we can see that the bash profile is reloaded. We can use echo $URL to print the environment variable value that we defined in the .bash_profile file.

Terminal 1
Terminal

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bash
bash_profile
communitycreator
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